Answer:
1. 73 %
2. 27 %
3. $60,000
4. Ways to increase projected operating income without increasing total sales revenue :
- Reduce the variable costs per unit
- Reduce fixed overheads
Step-by-step explanation:
Contribution Margin Ratio = Contribution / Sales × 100
Where,
Contribution = Sales - Variable Costs
 = $88,000 - $23,760
 = $64,240
Then,
Contribution Margin Ratio = $64,240/ $88,000 × 100
 = 73 %
Variable Cost Ratio = Variable Cost / Sales × 100
 = $23,760 / $88,000 × 100
 = 27 %
Break-even sales revenue = Fixed Costs ÷ Contribution Margin Ratio
 = $43,800 ÷ 0.73
 = $60,000
Ways to increase projected operating income without increasing total sales revenue :
- Reduce the variable costs per unit
- Reduce fixed overheads